User's Manual

λ Remove the XN-620 module from its protective packaging.
λ Avoiding Electrostatic Discharge
Before you install the XN-620 module, ground yourself by touching a
piece of metal to avoid electrostatic discharge (ESD). You should also
take the following precautions to prevent damage to the XN-620
module:
λ Keep the XN-620 module in its antistatic-shielded bag until
you are ready to install it.
λ Handle the XN-620 module by its edges.
λ Ensure the connector is connected to above Model’s board tightly.